{"id":567,"date":"2019-01-18T17:34:26","date_gmt":"2019-01-18T08:34:26","guid":{"rendered":"http:\/\/cassini.kyoto-svp.com\/?p=567"},"modified":"2019-01-18T17:52:46","modified_gmt":"2019-01-18T08:52:46","slug":"2019-01-18%ef%bc%9a%e3%82%ab%e3%83%83%e3%82%b7%e3%83%bc%e3%83%8b%e3%81%ae%e8%a6%b3%e6%b8%ac%e3%81%ab%e3%82%88%e3%82%8a%e5%9c%9f%e6%98%9f%e3%81%ae%e7%92%b0%e3%81%8c%e6%af%94%e8%bc%83%e7%9a%84%e6%96%b0","status":"publish","type":"post","link":"https:\/\/cassini.kyoto-svp.com\/?p=567","title":{"rendered":"2019.01.18\uff1a\u30ab\u30c3\u30b7\u30fc\u30cb\u306e\u89b3\u6e2c\u306b\u3088\u308a\u571f\u661f\u306e\u74b0\u304c\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u3053\u3068\u304c\u5224\u660e\uff01"},"content":{"rendered":"\n<p class=\"has-text-color has-vivid-cyan-blue-color\">NASA\u306f\u571f\u661f\u63a2\u67fb\u30ab\u30c3\u30b7\u30fc\u30cb\u306e\u89b3\u6e2c\u30c7\u30fc\u30bf\u3092\u5206\u6790\u3057\u305f\u7d50\u679c\u3001\u571f\u661f\u306e\u74b0\u304c\u751f\u6210\u3055\u308c\u305f\u306e\u306f\u571f\u661f\u672c\u4f53\u306b\u5bfe\u3057\u3066\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u3068\u3044\u3046\u8aac\u306e\u88cf\u4ed8\u3051\u3068\u306a\u308b\u3068\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u571f\u661f\u672c\u4f53\u306f\u304a\u304a\u3088\u305d45\u5104\u5e74\u524d\u306b\u5f62\u6210\u3055\u308c\u305f\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u4e00\u65b9\u3067\u3001\u571f\u661f\u306e\u74b0\u306f1000\u4e07\u5e74\u304b\u30891\u5104\u5e74\u524d\u306b\u5f62\u6210\u3055\u308c\u305f\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u8a73\u7d30\u306fNASA\u306e\u8a18\u4e8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002\uff08\u548c\u8a33\u306f\u53c2\u8003\u3067\u3059\uff09<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2>NASA&#8217;s Cassini Data Show Saturn&#8217;s Rings Relatively New<\/h2>\n\n\n\n<p>NASA\u306e\u30aa\u30ea\u30b8\u30ca\u30eb\u8a18\u4e8b\uff1a<a href=\"https:\/\/www.nasa.gov\/feature\/jpl\/nasas-cassini-data-show-saturns-rings-relatively-new\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"https:\/\/www.nasa.gov\/feature\/jpl\/nasas-cassini-data-show-saturns-rings-relatively-new (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">https:\/\/www.nasa.gov\/feature\/jpl\/nasas-cassini-data-show-saturns-rings-relatively-new<\/a><\/p>\n\n\n\n<p>\u753b\u50cf\u306fNASA\/JPL\u306b\u3088\u308b\u30a4\u30e1\u30fc\u30b8\u753b\u50cf\u3067\u3059\u3002Credits: NASA\/JPL-Caltech<\/p>\n\n\n\n<p>The rings of Saturn may be iconic, but there was a time when the  majestic gas giant existed without its distinctive halo. In fact, the  rings may have formed much later than the planet itself, according to a  new analysis of gravity science data from NASA&#8217;s Cassini spacecraft.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u571f\u661f\u306e\u74b0\u306f\u307e\u3055\u306b\u571f\u661f\u306e\u8c61\u5fb4\u305d\u306e\u3082\u306e\u3067\u3082\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u304b\u3064\u3066\u3053\u306e\u74b0\u304c\u7121\u3044\u5de8\u5927\u306a\u30ac\u30b9\u5929\u4f53\u3067\u3042\u3063\u305f\u6642\u4ee3\u3082\u3042\u308a\u307e\u3057\u305f\u3002\u4e8b\u5b9f\u571f\u661f\u306e\u74b0\u306f\u3001\u571f\u661f\u672c\u4f53\u304c\u5f62\u6210\u3055\u308c\u305f\u3088\u308a\u3082\u304b\u306a\u308a\u5f8c\u306b\u306a\u3063\u3066\u51fa\u6765\u305f\u3068\u3001NASA\u306e\u63a2\u67fb\u6a5f\u30ab\u30c3\u30b7\u30fc\u30cb\u306e\u91cd\u529b\u5206\u6790\u7d50\u679c\u304b\u3089\u65b0\u305f\u306b\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>The findings indicate that Saturn&#8217;s rings formed between 10 million  and 100 million years ago. From our planet&#8217;s perspective, that means  Saturn&#8217;s rings may have formed during the age of dinosaurs.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u89b3\u6e2c\u7d50\u679c\u306f\u571f\u661f\u306e\u74b0\u304c1000\u4e07\u5e74\u304b\u30891\u5104\u5e74\u524d\u306b\u5f62\u6210\u3055\u308c\u305f\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u305f\u3061\u306e\u5730\u7403\u306e\u8996\u70b9\u3067\u307f\u308b\u3068\u3001\u5730\u7403\u3067\u306f\u6050\u7adc\u304c\u751f\u304d\u3066\u3044\u305f\u6642\u4ee3\u306b \u571f\u661f\u306e\u74b0\u304c\u5f62\u6210\u3055\u308c\u305f\u304b\u3082\u3057\u308c\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/17849_PIA14943-800w.jpg\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" width=\"800\" height=\"413\" src=\"http:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/17849_PIA14943-800w.jpg\" alt=\"\" class=\"wp-image-571\" srcset=\"https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/17849_PIA14943-800w.jpg 800w, https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/17849_PIA14943-800w-300x155.jpg 300w, https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/17849_PIA14943-800w-768x396.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption> Credits: NASA\/JPL-Caltech <\/figcaption><\/figure>\n\n\n\n<p>The conclusions of the research \u2014 gleaned from measurements collected  during the final, ultra-close orbits Cassini performed in 2017 as the  spacecraft neared the end of its mission \u2014 are the best answer yet to a  longstanding question in solar system science. The findings were  published online Jan. 17 in Science.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u63a2\u67fb\u6a5f\u304c\u305d\u306e\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u7d42\u308f\u308a\u306b\u8fd1\u3065\u3044\u305f2017\u5e74\u306b\u884c\u308f\u308c\u305f\u6700\u5f8c\u306e\u8d85\u63a5\u8fd1\u8ecc\u9053\u306e\u969b\u306b\u89b3\u6e2c\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u3088\u308b\u7814\u7a76\u306e\u7d50\u8ad6\u306f &#8211; \u592a\u967d\u7cfb\u306b\u95a2\u3059\u308b\u9577\u5e74\u306e\u7591\u554f\u306b\u5bfe\u3059\u308b\u30d9\u30b9\u30c8\u306a\u89e3\u7b54\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u8abf\u67fb\u7d50\u679c\u306f1\u670817\u65e5\u306e\u30b5\u30a4\u30a8\u30f3\u30b9\u8a8c\u3067\u767a\u8868\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Saturn formed 4.5 billion years ago, in the early years of our solar  system. There have been clues that its ring system is a young upstart  that attached to Saturn years afterward. But how long afterward?<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u571f\u661f\u306f\u3001\u592a\u967d\u7cfb\u306e\u521d\u671f\u6bb5\u968e\u306e45\u5104\u5e74\u524d\u306b\u5f62\u6210\u3055\u308c\u307e\u3057\u305f\u3002\u305d\u306e\u571f\u661f\u306b\u8f2a\u304c\u51fa\u6765\u4e0a\u304c\u3063\u305f\u306e\u306f\u82e5\u3044\u6642\u4ee3\uff08\u571f\u661f\u304c\u5f62\u6210\u3055\u308c\u3066\u304b\u3089\u5f8c\u306e\u6642\u4ee3\uff09\u3067\u3042\u308b\u3060\u308d\u3046\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u306f\u4e00\u4f53\u3069\u306e\u304f\u3089\u3044\u5f8c\u306a\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n<p>To figure out the age of the rings, scientists needed to measure  something else: the mass of the rings, or how much material they hold.  Researchers had the remote-sensing measurements from Cassini and both of  NASA&#8217;s Voyager spacecraft in the early 1980s. Then came Cassini&#8217;s  unprecedented, up-close data from its final orbits. As the spacecraft  was running out of fuel, it performed 22 dives between the planet and  the rings.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u571f\u661f\u306e\u74b0\u304c\u5f62\u6210\u3055\u308c\u305f\u5e74\u4ee3\u3092\u628a\u63e1\u3059\u308b\u305f\u3081\u306b\u3001\u79d1\u5b66\u8005\u305f\u3061\u306f\u4f55\u304b\u4ed6\u306e\u3082\u306e\u3092\u6e2c\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u30021980\u5e74\u4ee3\u521d\u982d\u306bNASA\u306e\u30ab\u30c3\u30b7\u30fc\u30cb\u3068\u30dc\u30a4\u30b8\u30e3\u30fc\u306e2\u3064\u306e\u63a2\u67fb\u6a5f\u304b\u3089\u9060\u9694\u6e2c\u5b9a\u306e\u89b3\u6e2c\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u305d\u308c\u304b\u3089\u3001\u30ab\u30c3\u30b7\u30fc\u30cb\u304c\u6700\u5f8c\u306e\u8ecc\u9053\u304b\u3089\u306e\u524d\u4f8b\u306e\u306a\u3044\u8d85\u63a5\u8fd1\u89b3\u6e2c\u3057\u305f\u30c7\u30fc\u30bf\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002\u30ab\u30c3\u30b7\u30fc\u30cb\u304c\u71c3\u6599\u3092\u4f7f\u3044\u679c\u305f\u3059\u307e\u3067\u306e\u9593\u3001\u571f\u661f\u3068\u571f\u661f\u306e\u74b0\u306e\u9593\u309222\u56de\u3082\u901a\u904e\u3057\u305f\u306e\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22767_hires.jpg\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" width=\"1024\" height=\"432\" src=\"http:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22767_hires-1024x432.jpg\" alt=\"\" class=\"wp-image-572\" srcset=\"https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22767_hires-1024x432.jpg 1024w, https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22767_hires-300x127.jpg 300w, https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22767_hires-768x324.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption> Credits: NASA\/JPL-Caltech <\/figcaption><\/figure>\n\n\n\n<p>The dives allowed the spacecraft to act as a probe, falling into  Saturn&#8217;s gravity field, where it could feel the tug of the planet and  the rings. Radio signals sent to Cassini from the antennas of NASA&#8217;s  Deep Space Network and the European Space Agency relayed the  spacecraft&#8217;s velocity and acceleration.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u63a2\u67fb\u6a5f\u304c\u571f\u661f\u3068\u571f\u661f\u306e\u74b0\u306e\u9593\u306e\u7a7a\u9593\u3092\u901a\u904e\u3059\u308b\u3053\u3068\u3067\u571f\u661f\u3068\u571f\u661f\u306e\u74b0\u304c\u4e92\u3044\u306b\u5f15\u304d\u5408\u3063\u3066\u3044\u308b\u3088\u3046\u306a\u611f\u3058\u306e\u91cd\u529b\u5834\u3092\u89b3\u6e2c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u306e\u3067\u3059\u3002NASA\u306e\u6df1\u5b87\u5b99\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u6b27\u5dde\u5b87\u5b99\u6a5f\u95a2\u306e\u30a2\u30f3\u30c6\u30ca\u304b\u3089\u30ab\u30c3\u30b7\u30fc\u30cb\u306b\u9001\u4fe1\u3055\u308c\u305f\u7121\u7dda\u901a\u4fe1\u3067\u63a2\u67fb\u6a5f\u306e\u901f\u5ea6\u3068\u52a0\u901f\u3092\u5236\u5fa1\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Once scientists knew how much gravity was pulling on Cassini, causing  it to accelerate \u2014 down to a fraction of a millimeter per second \u2014 they  could determine how massive the planet is and how massive the rings  are.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u79d1\u5b66\u8005\u305f\u3061\u306f\u3001\u30ab\u30c3\u30b7\u30fc\u30cb\u304c\u3069\u306e\u4f4d\u306e\u529b\u3067\u5f15\u3063\u5f35\u3089\u308c\u308b\u306e\u304b\u3092  &#8211; \u6bce\u79d2\u6570\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u307e\u3067 &#8211;  \u89b3\u6e2c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u306e\u3067\u3001\u305d\u306e\u7d50\u679c\u3092\u3082\u3068\u306b\u571f\u661f\u672c\u4f53\u306e\u5927\u304d\u3055\u3068\u571f\u661f\u306e\u74b0\u306e\u5927\u304d\u3055\u3092\u7b97\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>&#8220;Only by getting so close to Saturn in Cassini&#8217;s final orbits were we  able to gather the measurements to make the new discoveries,&#8221; said  Cassini radio science team member and lead author Luciano Iess, of  Sapienza University of Rome. &#8220;And with this work, Cassini fulfills a  fundamental goal of its mission: not only to determine the mass of the  rings, but to use the information to refine models and determine the age  of the rings.&#8221;<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u30ed\u30fc\u30de\u306e\u30b5\u30d4\u30a8\u30f3\u30c4\u30a1\u5927\u5b66\u306e\u30ab\u30c3\u30b7\u30fc\u30cb\u30e9\u30b8\u30aa\u30b5\u30a4\u30a8\u30f3\u30b9\u30c1\u30fc\u30e0\u306e\u30e1\u30f3\u30d0\u30fc\u3067\u3042\u308a\u3001\u57f7\u7b46\u8005\u306e\u30eb\u30c1\u30a2\u30fc\u30ce\u30fb\u30a4\u30fc\u30b9\u6c0f\u306f\u3001\u300c\u30ab\u30c3\u30b7\u30fc\u30cb\u306e\u6700\u7d42\u8ecc\u9053\u3067\u571f\u661f\u306b\u8fd1\u3065\u304f\u3053\u3068\u306b\u3088\u3063\u3066\u521d\u3081\u3066\u3001\u65b0\u3057\u3044\u767a\u898b\u306b\u3064\u306a\u304c\u308b\u89b3\u6e2c\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u306e\u3067\u3059\u3002\u300d\u3068\u8ff0\u3079\u307e\u3057\u305f\u3002 \u300c\u305d\u3057\u3066\u30ab\u30c3\u30b7\u30fc\u30cb\u306f\u305d\u306e\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u57fa\u672c\u7684\u306a\u76ee\u6a19\u3092\u9054\u6210\u3057\u307e\u3057\u305f\u3002\u305d\u308c\u306f\u571f\u661f\u306e\u74b0\u306e\u8cea\u91cf\u3092\u6c7a\u5b9a\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u571f\u661f\u306e\u74b0\u306e\u5f62\u6210\u904e\u7a0b\u306e\u30e2\u30c7\u30eb\u3092\u898b\u76f4\u3057\u3066\u5f62\u6210\u5e74\u4ee3\u306e\u7279\u5b9a\u3092\u3059\u308b\u305f\u3081\u306e\u60c5\u5831\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u300d<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22766_hires.jpg\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" width=\"1024\" height=\"432\" src=\"http:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22766_hires-1024x432.jpg\" alt=\"\" class=\"wp-image-573\" srcset=\"https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22766_hires-1024x432.jpg 1024w, https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22766_hires-300x127.jpg 300w, https:\/\/cassini.kyoto-svp.com\/wp-content\/uploads\/2019\/01\/PIA22766_hires-768x324.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption> Credits: NASA\/JPL-Caltech <\/figcaption><\/figure>\n\n\n\n<p>Iess&#8217; paper builds on a connection scientists previously made between  the mass of the rings and their age. Lower mass points to a younger  age, because the rings, which are bright and mostly made of ice, would  have been contaminated and darkened by interplanetary debris over a  longer period. With a better calculation of ring mass, scientists were  better able to estimate the rings&#8217; age.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u30a4\u30fc\u30b9\u6c0f\u306e\u8ad6\u6587\u306f\u3001\u4ee5\u524d\u304b\u3089\u8003\u3048\u3089\u308c\u3066\u304d\u305f\u571f\u661f\u306e\u74b0\u306e\u8cea\u91cf\u3068\u5f62\u6210\u5e74\u4ee3\u306e\u95a2\u4fc2\u306e\u4e0a\u306b\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002\u3088\u308a\u8cea\u91cf\u306e\u5c0f\u3055\u306a\u74b0\u306f\u5f62\u6210\u5e74\u4ee3\u3082\u82e5\u3044\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u305d\u308c\u3089\u306e\u8f2a\u306f\u3001\u3088\u308a\u660e\u308b\u304f\u3001\u4e3b\u306b\u6c37\u3067\u3067\u304d\u3066\u3044\u307e\u3059\u3002\u5f62\u6210\u5e74\u4ee3\u304c\u53e4\u3051\u308c\u3070\u3001\u9577\u3044\u5e74\u6708\u306b\u308f\u305f\u3063\u3066\u60d1\u661f\u9593\u306e\u30b4\u30df\u3084\u5875\u306b\u3088\u3063\u3066\u6c5a\u308c\u3066\u6697\u304f\u306a\u3063\u3066\u3044\u308b\u306f\u305a\u3060\u304b\u3089\u3067\u3059\u3002\u571f\u661f\u306e\u74b0\u306e\u8cea\u91cf\u3092\u3088\u308a\u6b63\u78ba\u306b\u7b97\u51fa\u3067\u304d\u305f\u3053\u3068\u3067\u3001\u79d1\u5b66\u8005\u305f\u3061\u306f\u74b0\u306e\u5f62\u6210\u5e74\u4ee3\u3092\u3088\u308a\u826f\u304f\u63a8\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Saturn scientists will continue work to figure out how the rings \nformed. The new evidence of young rings lends credence to theories that \nthey formed from a comet that wandered too close and was torn apart by \nSaturn&#8217;s gravity \u2014 or by an event that broke up an earlier generation of\n icy moons.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\">\u571f\u661f\u3092\u7814\u7a76\u3057\u3066\u3044\u308b\u79d1\u5b66\u8005\u305f\u3061\u306f\u3001\u571f\u661f\u306e\u74b0\u304c\u3069\u306e\u3088\u3046\u306b\u5f62\u6210\u3055\u308c\u305f\u304b\u3092\u660e\u78ba\u306b\u3059\u3079\u304f\u7814\u7a76\u3092\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002\u571f\u661f\u306e\u74b0\u306e\u5f62\u6210\u304c\u6bd4\u8f03\u7684\u82e5\u3044\u3068\u3044\u3046\u3053\u3068\u306e\u65b0\u305f\u306a\u6839\u62e0\u306f\u3001\u3042\u307e\u308a\u306b\u3082\u571f\u661f\u306b\u63a5\u8fd1\u3057\u3059\u304e\u305f\u5f57\u661f\u304c\u571f\u661f\u306e\u91cd\u529b\u306b\u3088\u3063\u3066\u30d0\u30e9\u30d0\u30e9\u306b\u3055\u308c\u305f &#8211; \u307e\u305f\u306f\u521d\u671f\u306e\u6c37\u306e\u72b6\u614b\u306e\u885b\u661f\u304c\u5d29\u58ca\u3057\u305f\u3001\u3068\u3044\u3046\u7406\u8ad6\u3092\u88cf\u4ed8\u3051\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Gretchen McCartney<br>\nJet Propulsion Laboratory, Pasadena, Calif.&nbsp;<br>\n818-393-6215&nbsp;<br><a href=\"mailto:gretchen.p.mccartney@jpl.nasa.gov\">gretchen.p.mccartney@jpl.nasa.gov&nbsp;<\/a><br><br>\nJoAnna Wendel&nbsp;<br>\nNASA Headquarters, Washington&nbsp;<br>\n202-358-1003&nbsp;<br><a href=\"mailto:joanna.r.wendel@nasa.gov\">joanna.r.wendel@nasa.gov&nbsp;<\/a><\/p>\n\n\n\n<p>2019-004<br>Last Updated: Jan. 18, 2019<br>Editor: Tony Greicius                                   <\/p>\n","protected":false},"excerpt":{"rendered":"<p>NASA\u306f\u571f\u661f\u63a2\u67fb\u30ab\u30c3\u30b7\u30fc\u30cb\u306e\u89b3\u6e2c\u30c7\u30fc\u30bf\u3092\u5206\u6790\u3057\u305f\u7d50\u679c\u3001\u571f\u661f\u306e\u74b0\u304c\u751f\u6210\u3055\u308c\u305f\u306e\u306f\u571f\u661f\u672c\u4f53\u306b\u5bfe\u3057\u3066\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u3068\u3044\u3046\u8aac\u306e\u88cf\u4ed8\u3051\u3068\u306a\u308b\u3068\u767a\u8868\u3057\u307e\u3057\u305f\u3002 \u571f\u661f\u672c\u4f53\u306f\u304a\u304a\u3088\u305d45\u5104\u5e74\u524d\u306b\u5f62\u6210\u3055\u308c\u305f\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002 \u4e00\u65b9\u3067\u3001\u571f&#8230;<\/p>\n","protected":false},"author":1,"featured_media":568,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[4,69,37],"_links":{"self":[{"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/posts\/567"}],"collection":[{"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=567"}],"version-history":[{"count":4,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/posts\/567\/revisions"}],"predecessor-version":[{"id":577,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/posts\/567\/revisions\/577"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=\/wp\/v2\/media\/568"}],"wp:attachment":[{"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cassini.kyoto-svp.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}